Tamping-machine.



Patented Dec. 17, 1912.

2 SHEETS-SHEET 1 A fjc. W. BRADLEY. TAMPING MACHINE. APPLICATION FILED00T- 6, 1911.

G. W. BRADLEY.

` TAMPING MACHINE. A APPLIGATON'PILBD 00T. s, 1911,4

Patented Dec. 17,191.2. Y

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' 'errantes wnnannnr, or zoox RAPIDS, IOWA.

'murine-MACHINE. i

Lerares.

Specification of Letters Patent.

t patented Dec. 17,1912.

To'cZZ who-mit mafiylconcern:

Be it knownthat I, CHARLES WQBRADLEY,

citizen of the United States, 4residing atv Rock Rapids, iii thecount'yof Lyon .and Stat-e of Iowa, haveginvented certain new and usefulImprovements in Tamping-Ma-- chinos, of ywhich the .following 1s aspeciiiCatiOn.

This invention relates t ramping machines, and has for itscbjecttoprovide a simple and an eiiicient machine especially adapted to beused for t-amping plast-ic vmaterial, as for instance cement, mortar-I'or 4clayin molds.

With this object in .view the l Iiitchine includes a frame adapted to'be positioned overa mold, which may be of anydesired struc ture, thesaid frame having ljournale'd therein a shaft provided with a series ofcranks.

Frames are mounted for vertical sliding, movement upon the` firstmentioned frame.

. and are located in the paths'of movement of the said cranks when thecranks are moving in an upward direction, butwhen the cranks begin todescend they pass beyond theends of the movable frames so that the vsaidframes and` their attachments may drop. Spacvd tamping rods `arecarried'by each of the movable frames and tampi'ng heads are fixedl tothe' lower ends of the lsaid rods and are adapted to operate upon Vthematerial-in the mold. Means is provided lfor holding the tamping rodsand movable frames in'elevated positions so that t-hey may not be liftedby the cranks when it is .desired that the tamping operation shallcease.

For a full understanding of the invention reference is to be'had to thefollowing descriptio'n and accompanying drawings, inl which `Figure 1 isa side elevation oft-he taniping -inacliine; Fig. 2 is a front elevationof the same; Fig. 3 isl a perspective view of the same; and ffig.` i-isa horizontal sectional View of the same on the line 1f-4 of Fig. 2.Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying draw ingsby the same 4reference characters.

The tamping machine'consists of a frame 1 which is supported in elevatedposition above a mold 2. The mold 2 may be of any desired pattern orforni. A shaft 3 is jour* nalednpon the frame 1 and isV rovided withalbeit wheel L1 arorndwhich a' elt may l Application filed October (ci,1911. Serial No. 65$,220.

i be trained for the purpose of rotating the shaft. The shaft 3 isprovided with a series of cranks 5, preferably four in number, and thesecranks are disposed in different directions about the axis of the shaft3. Upon the pin 6 of each crank a roller 7 is loosely journaled.

Frames 8 are mounted 'for vertical sliding movement at the upper portion-of the :frame 4l and leachsaid frame 8 carries t'wo tamping rods 9,these rodsbeing spaced one from 'theothen y'Iamping heads 10are fixedt`o the lower ends of the rods 9 and are adapted tooperatein the mold 2at the opposite side portions/ thefreof. All of the rods '9 are proc. n

vided on onje side with a lug 11. l fPlates 121 are hinge'dly mounted attheir lower e'ndsnpon the lower port-ion of the frame 1 and 'extend upalongside-the lower portions ofthe rods 9. A rod 13! passes;transversely through the upper portions of y all of rthe plates `412 andis provided with stops 14 against which the sides of the said plates 12bear. Coiled springs 15 are threaded upon the r`od13 between the plates12 and the next adjacent stops 14: and serve as means for resilientlyholding the plates 12 against those stops 14 upon which they bear.- Therod A13 projects at onej end portion -beyond the side'offthe frame 1 andthe .intermediateportion of a lever 16 is vconnected with the projectingend portion of the said rod. The lever 16 is fulcrumed 4to the upperportion of the frame 1 and the lower end portion of the said lever isadapted to beengaged with a catch 17 Athat is c llocated at the lowerportion of the frame l, whereby the lower end portion ofthe lever '16 isheld away from the lower portion of the side of the frame 1;

"Vhen the machine is in operation the lower portion of the lever 16 ispositioned away from the lower portion of the frame 1 as lastabovedescribed, and therefore. the

upper ends of the plates 412 are'held out of, the paths of movement ofthe lugs 11.-

As 'the shaft 3 rotates the cranks 5 are carried around and the rollers7 successively engage the lo\wer portions of the frames 8 and lift thesame.' When the cranks 5 `assume'approxi'mately vertical positions' theypass from under the frames 8, whereby the said frames and theirattachments are per- `mitted to fall and the heads lOtanip the Amaterialin the mold 2. During the time 'that the saidheads 1Q are operatinguponv the material, more material may be supplied to the mold so thatthe tamping` operation may he continued during' the plaeing ot the 4mold will preferably be so disposed beneath material in the meld andduring the process ot' termine the article.

The vertically movable frames together with their ataehnients are ot.approximately the same ght and conse-fpiently the lamp ing o].ierationwill be unilforni and the ma; terial in the mold will be conmressed to aunitori'n density, The sueressilje action ot the tamping heads will havea tendealey to i keep the material at or about the same level in themold during' the talnpn'ur operation.

W'hen it is desired lo interruptr the tampine` operation withoutetopping` the 'rotation ot the shalt 3, the lower portion of the lever16 disengaged from the outer end ot the catch t7 and the springs 115Vtorce the upper ends ot the plates l2 toward the stops lelandresiliently hold the upper or tree ends olf the said plates against therods 9 when the parts are in the position as illustrated in Fig.-Conseqnently as the said lugs and the rods J to which they are attachedare lifted above the upper edges of the plates l2, the said lugs willseat upon the upper edges otl the plates and the rods 9 and theirattachments are prevented it'rom Atalling as the cranks 5 pass tromunder the frames 8 as above described. This is done when the article inlthe mold has been completed, so that the heads l() are held in ele,-va-ted positions, and the arlirle may be removed from the mold and theformation ot another article eontii'ined.

The frames are Composed ol side seetions which are spaced from eachother and the said sections are rectangular in side elevation and titsnugly about the upper portion ol` the frame l. The rods are guided atthe upper and lower portions of the Ytrame and consequently the upperportions ot' the said'rods and the lrames'S are so disposed about theupper portion of the trame 'l as to prevent the said trames 8 and the.rods from binding (hiringtheir reciprocatory movement with relation tothe traine 1.

It will be observed `that the littii'iglrames ,S project forwardly abovethe grealer portion of the main trame, and the two trames are sorelatively arranged that the lil'liirer trames are guided by the main'trame and thereby aid in maintaining the tampers in a. vertical planeduring their operation. The lifting frames project over the drive shaftwhich is arranged upon the main trame, so that the full lifting:rstrength ot thevdrive shaft is utilized, and the tampers with thelifting frames to which they are secured nermitted to drop by gravity,so that the weight of the trames and the talnpers is utilized to packthe material in the mold.

t will be understood, ot course, that the the tanipers that the downwardmovement of the tampers will be arrested before the litting tramesstrike the driving,` shat't, and injury to said shattwill be therebyavoided. ll will, furthermore, be noted that the arresting plates orbrakes by whirh the lamp ers are held in an elevated position arearranged between the tampers and extend up alongside the same. so thatthey do not project l'rom the main iframe or beyond the tampers, andtherefore are not liable to be struek by objects which maybe broughtnear the app: 'atus, and injury to the said plates thereby prevented.

Havinp` thus described the invention what is claimed as new is:

l. A. tamping n'iaehine comprisingl an elevated rigid main trame having`upwardly and downwardly rxieuding portions, tampers guided vertically bv the upwardly andI downwardly extending` portions ol. the main trame,lifting trames secured to the upper i ends ol the tamp'ers andprojecting above and below the upwardly extrnding portion ot the mainVtraine in front lhereot and slid ably engaging Ithe same, a drivingshal'lv mounted on the main traine in advanre olE the upwardly extendingportion ibereol', and lnoiei'liwus on said shalt adapted toengage thelower edp'es ol" the littine trames.

J. lamping;v machine comprising a supporting l'ralne, vertically movablelampers mounted in said l'rame, means l'or elleeling rerun-eration ol.tbe lampers, arrestingr plates mounted on the frame between the tampersand extending; upwardly alongside the same to engage andhold them in anelevaled posit ion, and yieldable means 'tor simultaneously moving,T allol said plates into and out ot engagement with the tampers..

I, A lampine'machinecomprisingatrame, rods mounted l'or reeiprocatorymovement in the trame, means for reeiprfmatingy the rods, lugs carriedby said rods, plates hinged to the Ytrame between the rods, a rodpassingr loosely through the plates, stops carried by the lastmentioned. rod and bearing against the plates, springs interposedbetween the stops and the plates, and means for shitting the said rod.

ln testimony whereof l allix lny signature in presence ot two witnesses.

. CHARLES W. lile XDLEY.

lfVitnesses b'. D. l-rNiknn, LEONE Konn'rii.

a. Si

